80460400820 has 48 divisors (see below), whose sum is σ = 176490437760. Its totient is φ = 30772646016.

The previous prime is 80460400819. The next prime is 80460400843. The reversal of 80460400820 is 2800406408.

It is a super-2 number, since 2×80460400820² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 613682 + ... + 733161.

It is an arithmetic number, because the mean of its divisors is an integer number (3676884120).

Almost surely, 2^80460400820 is an apocalyptic number.

It is an amenable number.

80460400820 is an abundant number, since it is smaller than the sum of its proper divisors (96030036940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80460400820 is a wasteful number, since it uses less digits than its factorization.

80460400820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1346984 (or 1346982 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The spelling of 80460400820 in words is "eighty billion, four hundred sixty million, four hundred thousand, eight hundred twenty".